org.hibernate.hql.ast.querySyntaxException:产品未映射[来自产品]

我今天最恼人的问题是:

我正在尝试使用Hibernate访问数据库。在多次错误启动之后,我放弃了我的特定项目,选择使用NetBeans 6.9附带的示例数据库和向导。

我启动了NetBeans,启动了示例Derby数据库,并按照本教程中的说明进行操作: http://netbeans.org/kb/docs/java/hibernate-java-se.html ,跳过mysql数据库的位,用信息替换derby sample 数据库(如适用)。

我所有的谷歌搜索都告诉我,我犯了一个新手错误,我指的是表名而不是类名。我确信事实并非如此。引用一个类的方法只有这么多。除此之外,我很困惑。除了巫师,我什么都没用,我使用了示例数据库,我找不到任何其他我可能搞砸的东西。

我右击 hibernate.cfg.xml 选择 Run HQL Query (就像在教程中一样)并在运行查询时在上面的问题标题中获取异常 from Product

请在我肝衰竭前帮助我。

[1]这就是你们中的一个会证明我错的地方。

休眠.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
 <hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.DerbyDialect</property>
    <property name="hibernate.connection.driver_class">org.apache.derby.jdbc.ClientDriver</property>
    <property name="hibernate.connection.url">jdbc:derby://localhost:1527/sample</property>
    <property name="hibernate.connection.username">app</property>
    <property name="hibernate.connection.password">app</property>
<property name="hibernate.show_sql">true</property>
<mapping resource="sample/db/PurchaseOrder.hbm.xml"/>
<mapping resource="sample/db/Customer.hbm.xml"/>
<mapping resource="sample/db/MicroMarket.hbm.xml"/>
<mapping resource="sample/db/ProductCode.hbm.xml"/>
<mapping resource="sample/db/Product.hbm.xml"/>
<mapping resource="sample/db/Manufacturer.hbm.xml"/>
<mapping resource="sample/db/DiscountCode.hbm.xml"/>
  </session-factory>
</hibernate-configuration>

产品HB.MXML

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Aug 30, 2010 3:57:50 PM by Hibernate Tools 3.2.1.GA -->
<hibernate-mapping>
  <class name="sample.db.Product" schema="APP" table="PRODUCT">
    <id name="productId" type="int">
      <column name="PRODUCT_ID"/>
      <generator class="assigned"/>
    </id>
    <property name="manufacturerId" type="int">
      <column name="MANUFACTURER_ID" not-null="true"/>
    </property>
    <property name="productCode" type="string">
      <column length="2" name="PRODUCT_CODE" not-null="true"/>
    </property>
    <property name="purchaseCost" type="big_decimal">
      <column name="PURCHASE_COST" precision="12"/>
    </property>
    <property name="quantityOnHand" type="java.lang.Integer">
      <column name="QUANTITY_ON_HAND"/>
    </property>
    <property name="markup" type="big_decimal">
      <column name="MARKUP" precision="4"/>
    </property>
    <property name="available" type="string">
      <column length="5" name="AVAILABLE"/>
    </property>
    <property name="description" type="string">
      <column length="50" name="DESCRIPTION"/>
    </property>
  </class>
</hibernate-mapping>

爪哇产品

package sample.db;
// Generated Aug 30, 2010 3:57:50 PM by Hibernate Tools 3.2.1.GA


import java.math.BigDecimal;

/**
 * Product generated by hbm2java
 */
public class Product  implements java.io.Serializable {


     private int productId;
     private int manufacturerId;
     private String productCode;
     private BigDecimal purchaseCost;
     private Integer quantityOnHand;
     private BigDecimal markup;
     private String available;
     private String description;

    public Product() {
    }


    public Product(int productId, int manufacturerId, String productCode) {
        this.productId = productId;
        this.manufacturerId = manufacturerId;
        this.productCode = productCode;
    }
    public Product(int productId, int manufacturerId, String productCode, BigDecimal purchaseCost, Integer quantityOnHand, BigDecimal markup, String available, String description) {
       this.productId = productId;
       this.manufacturerId = manufacturerId;
       this.productCode = productCode;
       this.purchaseCost = purchaseCost;
       this.quantityOnHand = quantityOnHand;
       this.markup = markup;
       this.available = available;
       this.description = description;
    }

    public int getProductId() {
        return this.productId;
    }

    public void setProductId(int productId) {
        this.productId = productId;
    }
    public int getManufacturerId() {
        return this.manufacturerId;
    }

    public void setManufacturerId(int manufacturerId) {
        this.manufacturerId = manufacturerId;
    }
    public String getProductCode() {
        return this.productCode;
    }

    public void setProductCode(String productCode) {
        this.productCode = productCode;
    }
    public BigDecimal getPurchaseCost() {
        return this.purchaseCost;
    }

    public void setPurchaseCost(BigDecimal purchaseCost) {
        this.purchaseCost = purchaseCost;
    }
    public Integer getQuantityOnHand() {
        return this.quantityOnHand;
    }

    public void setQuantityOnHand(Integer quantityOnHand) {
        this.quantityOnHand = quantityOnHand;
    }
    public BigDecimal getMarkup() {
        return this.markup;
    }

    public void setMarkup(BigDecimal markup) {
        this.markup = markup;
    }
    public String getAvailable() {
        return this.available;
    }

    public void setAvailable(String available) {
        this.available = available;
    }
    public String getDescription() {
        return this.description;
    }

    public void setDescription(String description) {
        this.description = description;
    }




}